Question

What are antagonistic muscles ? Give one example. <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> [Review Questions - Pg No.126 - SAQ - 4]

Answer 1

The muscle which cannot return to its original position without the action of another muscle is known as an antagonistic muscle.

Example: The biceps and triceps muscle.

The biceps muscle of the upper arm flexes i.e. bends the lower arm over the upper arm. Straightening of the lower arm is brought about by the triceps muscle.